Not a bud! But an interesting view of the Parry Sound CPR Train Trestle over the Seguin River under a stormy sky:

Here are some nice photographs of emerging buds on a rainy day: 3 pussywillows and a Tag (Speckled) Alder

Both catkins, female and male, of Alnus incana (subsp: rugosa) are shown in the photo below. The male catkins are starting to puff out in preparation for their release of pollen to wind pollinate the upper female catkins.

Aha! First flower of spring! On a shrub. As the male catkin matures it opens up to release pollen which are captured by the sticky pistils of the female flower.